Why is my Apple Watch Series 10 not displaying wrist temperature

Track your nightly wrist temperature changes with Apple Watch - Apple Support

M1 Mac mini, macOS 15.0.1;  Watch, series 10 GPS-only, watchOS 11.0.1; iPhone 16, iOS 18.0.1; TV 4th Gen, tvOS 18.0.1; HomePods, audioOS 18.0.1 and Airport Express w/ Airplay 2

Ever since I upgraded my Apple Watch series 10 to watchOS 11.1, my watch has failed to obtain my wrist temperature during sleep. It worked fine prior to the update. Also I don’t get a notification saying it will take 5 days to start recording my wrist temperature so I don’t know what the problem is or how to fix it

Did you already try to unpair the watch and connect it again to your iPhone, setting it up as a new device?

Unpair and erase your Apple Watch - Apple Support

Set up your Apple Watch - Apple Support

Hello, I also have the same problem on my Apple Watch Ultra 2 with WatchOS 11.01. However, sleep mode is activated as well as the temperature on the wrist.

Did you get the message, that the temperature app needs to collect more data over a few nights, before it can show an estimate for your temperature?

Hello, yet the temperature worked very well before. From one day to the next it no longer works.

My watch 9 worked till upgrade to 11.01. I guess it’s another software glitch.